Furnace



June 2, 1925. 1,540,217

c. A. LAUsz-:N

FURNACE Filed June 17, 1924 2 Sheets-Shea?, l

IN V EN T OR.

A TTORNE Y.

I June 2,1925.

` C. A. LAUSEN FURNACE Filed June 17, 19244 2 Sheets-Sheet 2 31a/maniciJ?. Zaan/sew Patented .lune 2, 1925.

UNITED STATES PATENT oFFlcE.

CHRISTIAN A. LAUSEN, OF COUNCIL BLUFFS, IOWA.

FURNAGE.

Application filed .Tune 17, 1924. Serial No. 720,606.

to provide a. device of this character where-- by an efficientcirculation of heated air will be maintained and wherein a maximumnumber of heat units will be conserved within the fire box whilecombustion is taking place therein. Also to provide a furnace whereinthe minimum amount of heat units will be lost through the chimney, andthe maximum heating of the recirculating `air obtained.

A further object is to provide a furnace ,with water jackets, positionedwhereby they will absorb and convey heat units in to the volume of watercontained therein for generating aqueous vapor or steam, which in turnis conveyed to the fire box and there decomposed into their elements forrecombustion to augment the heating efliciency of the furnace.

A further object is to dispose the water jackets onopposite sides of`the furnace casing, and to provide pipes connected to their uppersides, which pipes extend downwardly and inwardly towards each otherbeneath the furnace grate and terminate in a perforated member throughwhich the vapors pass to the fuel on the grate thereby rendering thesame more volatile.

A further object is to provide a pipe connecting one of the waterjackets tothe hood of the furnace and forming means whereby aqueousvapor or steam may be discharged into the air after it is heated, andbefore it passes through the pipe leading to the registers of abuilding, thereby mois tening the air.

With the above and other objects in view the invention resides in thecombination and arrangement of parts as hereinafter set forth, shown inthe drawings, described and claimed, it being understood that changes inthe precise embodiment of the invention may be made within the scope ofwhat is claimed without departing from the spirit of the invention.

In the drawings i Figure 1 is a perspective view of the furnace, partsbeing broken away to better show the structure.

Figure 2 is a vertical transverse sectional view through the furnace.

Figure 3 is a detail sectional view through a portion of the front wall.of the furnace casing, and the hood.

Figure 4 is a vertical longitudinal sectional view through the furnace.

Referring tothe drawing, the numeral 1 designates the main casing of thefurnace which is preferably rectangular, and extending Vthrough thefront wall 2, and the rear wall 3 are upwardly and forwardly inclinedpipes or fiues 4, through which air passes from the supply pipe 5, whichconducts air to the chamber 6 of the hood 7. The air in passing throughthe flues 4 is heated by fire upon the grate 8 disposed below the` fluesand rises into the forward hood 9, from which forward hood the heatedair passes through the pipe 10 to the various' rooms of a building. Theproducts of com-l busion pass around the fiues 4 heating the airtherein, and dischargeA through the pipe 11 which leads to a chimney inthe usual manner.V It has been found that a large ypercentage of theheat units in a furnace `pass out the chimneyV incident to impropercombustion or construction. It has also been found that by supplyingsteam or aqueous vapors to the fuel, during the combustion, the maximumheat units are obtained and conserved for heating purposes, and toaccomplish this result the opposite sides of the casing 1 adjacent thesides of the fire box above the grate 8 are provided with water jackets12, in which water is placed. Connected at 13 to the upperv sides of thewater jackets are pipes 14, which pipes i extend downwardly and inwardlyto posi'- tions below the (grate 8, and are connected to a perforatechambered member 15 through the perforations 16 of which the aqueousvapors or steam is discharged into the fuel on the grate 8, therebythrough the recomposition of lhydrogen and oxygen gases, previousdecomposed through the energy 0f heat units increasing the combustionand insuring the maximum amount of heat units obtained from the fuel.The water in the water jackets 12 is maintained heated by Aheat radiatedthrough the side walls 1 of vthe casing 1, therefore it will be seenfthat for heating the water and isfnot entirely lost.

One of the water jackets l2 has connected' thereto7 above the waterlevel therein, pipe 17, which pipe is connected tothe lower end of theforward hood 9 at 18, and forms ineans for conducting aqueous vapors andVteam to the hoods? where it will mingle /witli the heated air passingfrom the lues 4 tothe pipe l0; consequently said heated air will bepartially inoistened when it reaches a room, whereby the oxygen isreplenished to a certain extent.

From the above it will be seen that a furnace is provided whereinaqueous vapors or steam are conveyed to the fire box of the furnacethereby iiisuri a maximum etliciency of combustion i.. consequently theutilization of the maximum heat units obtainable from the fuel. It willalso be seen that aqueous vapors are conveyed tothe heated air after thepassage from the fines and consequently the air will be moistened whenit enters the rooinof a building.

:The invention having been vset forth what is claimed as newjand usefulis :k

l. vThe combination with a hot air furnace, said furnace comprising acasing, Ia' tire box`having a gratetlierein, and flues above said firebox, of means for supplying aqueous vapors and steam to the fire box,said means comprising water jackets. carried by the casing and heated bythe fire box and means for conveying the aqueous vapors and steam4 fromthe water jackets and discharging the same beneath the grate.Y

2. The combination with a-hot air furnace, Vsaid furnace comprising acasing', a lire box` having. aV grate therein, and flues above said lirebox and through which air signature.

nace, said furnace comprisingI a casing, aix;

tire box having a grate therein, and flues above said :fire box, andahood having a heat collecting chamber into which the air from the fluesis discharged, o f means for supplying aqueous vapors-and steam to thefire box upwardly through the grate, said vapors and steam beinggenerated by heat radiated from the i'ire box and means for discharginga portion ot" said vapors and steam into the heat collecting chamber ofthe hood.

4. The combination with a furnace comprising a casing, a tire box, andflues, anda heat collecting hoodinto which the ilues discharge, ofineansfor supplying aqueous vapors and steam to said hre box fand heatcollecting hood, said means comprising water jackets carried by theopposite sides of the casing and heated by heat radiated from the lirebox, pipes carried .by said water jackets adjacent their upper sides anddischarging into the fire box, and a pipe carried by one of the waterjackets and disi charging into the heat collecting hood. In testimonywhereof I hereunto aiiix my oHRisTiAN A. LAUSEN.

